Patentable/Patents/US-7170840
US-7170840

Information recording method

PublishedJanuary 30, 2007
Assigneenot available in USPTO data we have
Inventorsnot available in USPTO data we have
Technical Abstract

An information recording method in which an energy beam is irradiated to a recording medium and a basic recording pattern is generated. The basic recording pattern has a first power level provides a first state and a second power level providing a second state. Based upon a period of a recording timing generating clock in a recording mode, and a relative velocity of the energy beam and the recording medium, there is formed a first sequence of the second state and the first state based upon parameters as a first small recording pattern, a second sequence which starts with the first state and ends with the first state as a second small recording pattern, a state in which the second small recording pattern follows said the small recording pattern as the basic recording pattern, and a state in which the basic recording patterns are repeated as a recording pattern.

Patent Claims
1 claims

Legal claims defining the scope of protection, as filed with the USPTO.

1

1. An information recording method comprising the steps of: irradiating an energy beam to a recording medium; and generating a basic recording pattern for recording on the recording medium, the basic recording pattern having a first power level to provide a first state and a second power level which is higher than said first power level to provide a second state; wherein when a period of a recording timing generating clock in a recording mode is T, and a relative velocity of said energy beam and said recording medium is v; forming a first sequence of said second state with a length avT (first mark), said first state with a length ivT (first space) following said first mark, said second state with a length mvT (second mark) following said first space, said first state with a length jvT (second space) following said second mark and said second state with a length bvT (third mark) following said second space as a first small recording pattern; forming a second sequence which starts with said first state and ends with said first state while said first and second states appear alternately by a finite number of times as a second small recording pattern; forming a state in which said second small recording pattern follows said first small recording pattern as said basic recording pattern; forming a state in which said basic recording patterns are repeated as a recording pattern; forming said recording pattern which comprises said basic recording patterns obtained by changing a parameter j variously while parameters a, i and m are fixed, as a first recording pattern, wherein said parameters a, i, m and j are natural numbers; and forming said recording pattern which comprises said basic recording patterns obtained by changing said parameter i variously while a parameter b and said parameters j and m are fixed, as a second recording pattern, wherein said parameter b is a natural number.

Classification Codes (CPC)

Cooperative Patent Classification codes for this invention. Click any code to explore related patents in that topic.

Patent Metadata

Filing Date

July 1, 2005

Publication Date

January 30, 2007

Want to explore more patents?

Browse 5M+ US patents with plain-English claim translations and AI-generated analysis.

Citation & reuse

Analysis on this page is generated by Patentable — an AI-powered patent intelligence platform. AI-generated summaries, explanations, and analysis may be reused with attribution and a visible link back to the canonical URL below. Patent abstracts and claims are USPTO public domain.

Cite as: Patentable. “Information recording method” (US-7170840). https://patentable.app/patents/US-7170840

© 2026 Patentable. All rights reserved.

Patentable is a research and drafting-assistant tool, not a law firm, and does not provide legal advice. Documents we generate are drafts for review by a licensed patent attorney.